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ok, got a chamber? want to produce maximum yealds for green plants?take a 2 liter pop bottle. fill 1/8 with sugar, add a spoonful of yeast and half a spoon of baking soda.

top it off with lukewarm water and shake.

now the cap should have a hole in it, affix some tubing to the hole, provided you dont have fans running you can drop CO2 onto your plant from above VIA hose. otherwise simply place bottle in unit and allow the expelled CO2 to flow into the atmosphere, multiple bottles will have more effect.cover bottles to avoid excessive light. yeast grows better in the dark. dont underestimate how much carbon dioxide a simple ferment can produce, the bottles may well explode if left closed. and do not drink or empty into plants. just in case you were wondering.

i have a simmilar system for my aquarium with a bubble maze to diffuse the gas into the water to help my plants grow (aquatic plants) it is a store-bought unit, after examination i realized i could have made it myself. and the ingredients were labelled as "activatior" and "stabilizer" so people wouldnt figure out that they are paying 6$ for a pinch of yeast and a dash of baking soda (replacement packets) :P not to mention the price of the unit.i could tell just by looking what the contents were. its kinda like how pet stores sell "buffer" if you read the side it says "sodium bicarbonate" thats baking soda, you know, the main ingredient in crack?$10 for an asprin bottle full with a little spoon.a 2$ pack of baking soda has 10 times that easy.you know what? just about evrything they sell you at a petshop can be made with stuff you have lying around.

Follow the strain isolation technique on Let's Grow Mushrooms, and then select sectors early which are brown in color. By the second or third transfer, you'll see stones developing, and this is only about 1 month after the original swipe of spores on agar.

Now, take each stone and move it to a new dish. Soon, the mycelium will grow out and you'll see fresh stones developing, and if they're good strains, the sclerotia is forming long before the mycelium reaches the edge of the plate. Pick strains which form four or five stones within two weeks and use these for your grain masters. -- RR

because i figured it out from the ratios suggested by the product manufacturer for optimal CO2 production. i suppose there could be better ratios, but this is the one that is visably working for me now in my tank, my unit is about 5 inches song, cylindrical, and 2 inches in girth (stop that dirty thinking) and it produces a bubble approx 1/4 cc per 5 seconds.i would immagine a pob bottle would produce much more. probably enough to blow up a balloon in a half hour.

what if your plants cannot convert that much of CO2 and you and your whole family die of asfixia?i'd say, have a bird in a cage, always. CO2 is best for fighting fire. i'm skeptical it would make your plants grow better, don't you think the explosion engine machines and pollution do that a lot already?

from memory most plants can use upto 2000ppm of CO2....normal levels of CO2 are around 1200ppm,so to answer your question,yes plants can use more CO2 than normal levels,and the amounts we are talking about are not going to asphixiate anyone. were you drunk when you posted that?

Normal levels of CO2 in the air are 200ppm (it's not in the thousands) that comes out to be.03% CO2 content of normal air on average.
CO2 supplementation is often good.
Why is everyone going through all this trouble. Why not use some water/vinegar and some baking soda. You can wrap the baking soda in a paper towel and drop it in if you want it to go slower. Or just make the vinegar/water colder.

oh, you don't have alcohol or natural (methane) gas engines where you live? sometimes methanol is used but only for stocks or super cars, i think it's combustion is pretty clean too.we have lots in south america.cheaper than gasoline, clean combustion, almost only CO2 and water as residue... they do a little less miles per gallon of fuel but you have a good increase in the potency and torque, due to the higher compression rates.

anyways, what is your purpose? to produce more oxygen to clean your karma? do plants grow more this way?

also thanks neuro, for showing better the numbers to the one who though i was drunk... hrhrhrh

Thirty pounds of sugar gradually give off as much CO2 as is contained in a cilinder and the residual fluid can be distilled to yield 5-10 liters of 90% alcohol you can use for herbal extractions or dilute to 10-20 bottles worth of vodka. I believe 30lbs yields about 15 lbs CO2 with no reactive/fire/compressed gas hazards involved *and* you get 10-20 bottles of vodka as a bonus.

You can't beat that, it's a rather interesting side effect ^_^

If you let the emitted CO2 blow through activated charcoal it won't be smelly either.

If you have a good still you can get 90+% yield of 90+% alcohol. This has the added benefit that you can use the CO2 to grow the plant and the alcohol to extract the plant, for instance Salvia.

Wiccan is spot on there. I brew with turbo yeasts. I used to brew out 20kg of sugar in a week which is approx 10kg of CO2. Roughly 1/2 the sugar turns to alcohol, half gas.With an easy to make spiral still you can get to 95%

running a generator isn't a bad idea...as long as the ethanol doesn't corrode the engine parts. I've heard something about gas engines breaking down faster if ethanol is used because of its higher octane number than gasoline or something. ALso, I'm not sure about the fuel rating of ethanol vs gasoline and how many GPH you'd need of ethanol in a gasoline rated generator. is it dangerous to use ethanol in gasoline engines because of how explosive the vapor is?

If all of this turns out to be practical then imagine it...you could sustain a healthy grow for the price of sugar.

A great idea. I'd never thought of building an organic "C02 generator" for my plants. I whipped one up two days ago. It was going slow at first, but last night I fed it a bit more sugar, and now it emits a large bubble of C02 every five seconds. Can't wait to harvest the alcohol, either. It would be my first distillation if it works.DiagramRunning the harvested gas through water seems to keep the smell down and keeps bacteria and dust out. I put it right next to my Salvia. I don't know if it's working, but she certainly looks happy, especially after having lost all of her leaves in late December. What do you think?I'll keep you up to date if I see any changes in growth rate.--Update--I did notice something weird today. By looking at the water level in the little piece of tubing from the fermentation vessel, I can see how the pressure from the C02 interacts with atmospheric pressure. Every time I mist my Salvia, the C02 is forced back into the fermentation bottle as water fills the tube, almost as if this tiny bit of mist is drastically increasing the air pressure. Does anyone have any idea why this happens?